Ted Stevens Anchorage International in May 2026

86.1%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In May 2026, reporting carriers scheduled 1,818 domestic departures from Ted Stevens Anchorage International (ANC). 86.1% left less than 15 minutes late and 88.7% reached their destination on time; 0.6% were cancelled.

Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so ANC departures were 9.0 points above the national departure figure.

A year earlier, in May 2025, the airport had 1,692 departures with 88.9% leaving on time: a change of −2.8 points, with flights up 7%.

Flights arriving at ANC that month were on time 81.6% of the time (1,822 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 52%, late-arriving aircraft 34% and national aviation system 11%.

On time 88.7%
Arrived 15+ minutes late 10.6%
Cancelled 0.6%
Diverted 0.1%

Every scheduled departure from ANC in May 2026, judged by arrival at the destination.

May 2026 against a year earlier, the airport's year and the nation

Measure	May 2026	May 2025	ANC, 12 months to Jul 2026	All reported flights, May 2026
Departed on time	86.1%	88.9%	82.7%	77.1%
Arrived on time	88.7%	87.0%	83.5%	77.6%
Cancelled	0.6%	0.7%	1.1%	0.9%
Average departure delay (late minutes only)	8.8 min	7.8 min	11.7 min	16.0 min
Scheduled departures a day	61	56	55	20,391
Scheduled departures	1,818	1,692	20,008	611,735

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AS Alaska Airlines	1,342	74%	91.5%	-7.4 min	0.5%
DL Delta Air Lines	219	12%	84.0%	1.3 min	0.5%
UA United Airlines	159	9%	84.3%	-5.1 min	1.9%
AA American Airlines	64	4%	70.3%	9.9 min	0.0%
WN Southwest Airlines	34	2%	64.7%	15.6 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ANC–SEA	Anchorage to Seattle	585	93.3%	-12.0 min	0.5%
ANC–FAI	Anchorage to Fairbanks	142	94.4%	-9.8 min	0.0%
ANC–JNU	Anchorage to Juneau	112	89.3%	-6.4 min	0.0%
ANC–PDX	Anchorage to Portland	112	92.9%	-4.2 min	0.0%
ANC–ORD	Anchorage to Chicago	93	79.6%	-3.6 min	2.2%
ANC–DEN	Anchorage to Denver	90	82.2%	1.9 min	1.1%
ANC–ADQ	Anchorage to Kodiak	81	93.8%	-9.0 min	1.2%
ANC–BET	Anchorage to Bethel	62	90.3%	-3.4 min	0.0%
ANC–MSP	Anchorage to Minneapolis	55	76.4%	35.6 min	0.0%
ANC–DFW	Anchorage to Dallas/Fort Worth	42	69.0%	16.3 min	0.0%
ANC–PHX	Anchorage to Phoenix	42	88.1%	-8.2 min	0.0%
ANC–SCC	Anchorage to Deadhorse	42	92.9%	-0.8 min	0.0%

By scheduled departure hour

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), May 2026.

Delay causes

BTS cause category	Share of delay minutes	National, May 2026	Minutes
Air carrier	51.7%	33.0%	6,196
Late-arriving aircraft	34.3%	40.4%	4,109
National Aviation System	10.9%	20.5%	1,304
Extreme weather	2.5%	6.0%	301
Security	0.6%	0.1%	71

11,981 delay minutes on 193 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left ANC on time in May 2026?

86.1% of 1,818 scheduled domestic departures left less than 15 minutes late, and 88.7% reached their destination on time. The national figures that month were 77.1% and 77.6%.

How does that compare with a year earlier?

In May 2025, 88.9% of 1,692 departures left on time and 0.7% were cancelled, against 86.1% and 0.6% in May 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 2026; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for ANC · methodology · corrections.